Bus direct connection plug structure

Abstract

The utility model relates to the technical field of bus plugs, in particular to a bus direct connection plug structure, which comprises a bus main body, a sealing flange and a bus bracket, one end of the bus main body is provided with a connection contact, and the other end is provided with a female terminal strip. The sealing flange is arranged at one end, close to the connecting contact, of the bus main body, and the sealing flange is operably associated with a gas-insulated switchgear; the bus bracket is arranged at one end, close to the female terminal strip, of the bus main body; the bus support is used for fixing a bus. According to the utility model, the cabinet body structural components are not changed or slightly changed, the bus plug can be directly inserted into the gas chamber of the gas-insulated switchgear, redundant fault points generated by the inner cone insulator or the outer cone sleeve are reduced, subsequent insulation bus connection is facilitated, project uniformity is improved, and convenience is provided for subsequent power station transformation.

Description

Technical Field

[0001] This utility model relates to the field of busbar plug technology, specifically a busbar direct connection plug structure. Background Technology

[0002] In modern substations, for safety and to optimize the use of indoor space, the traditional power transmission method from the main transformer to the switchgear has changed from exposed copper busbars to fully insulated copper conduit busbars. For the selection of switchgear, especially at 35kV voltage levels, due to structural limitations, the original air-insulated switchgear has been replaced by gas-insulated switchgear. This necessitates a connection structure to isolate and seal the gas chamber of the gas-insulated switchgear and to allow for the subsequent connection of the insulated busbars. Existing solutions use #3 and #4 inner cone insulators and C-type and F-type bushings on the gas chamber to connect to the subsequent insulated busbars. However, some users worry that the increased number of accessories will create more potential fault points, and the variety of inner cone insulators and outer cone bushings makes it difficult to achieve project uniformity. Furthermore, the connectors leading out from inside the switchgear lack versatility. Therefore, a customized busbar plug connection structure that can be directly inserted into the gas-insulated switchgear is needed to replace the existing connection method. Utility Model Content

[0003] In view of the shortcomings of the prior art, this utility model provides a busbar direct connection plug structure, which can be modified with little or no modification to the cabinet structure components. The busbar plug can be directly inserted into the gas chamber of the gas-filled switchgear, reducing the unnecessary fault points caused by the inner cone insulator or the outer cone sleeve, facilitating the subsequent connection of the insulated busbar, improving the uniformity of the project, and providing convenience for subsequent power station renovation.

[0004] To achieve the above objectives, the present invention provides a busbar direct-connection plug structure, comprising a busbar body, a sealing flange, and a busbar support; one end of the busbar body is provided with a connecting contact, and the other end is provided with a female terminal block; the sealing flange is disposed on the busbar body near the connecting contact, and the sealing flange is operably associated with the gas-filled switchgear; the busbar support is disposed on the busbar body near the female terminal block; the busbar support is used to fix the busbar.

[0005] Furthermore, the main busbar consists of at least three sections.

[0006] Furthermore, a sealing ring groove is provided at the position where the sealing flange contacts the gas chamber, and a sealing rubber ring is provided in the sealing ring groove.

[0007] Furthermore, the sealing flange is provided with multiple sets of fixing threaded holes, which are symmetrically arranged around the axis of the sealing flange and are engaged with the fixing threaded holes by screws.

[0008] Furthermore, the connecting contact is inserted into the gas-filled cabinet and connected to the conductor inside the gas-filled cabinet.

[0009] Furthermore, the female terminal block is located outside the gas-filled cabinet and is connected to the subsequent busbar.

[0010] Furthermore, the busbar support is provided with stiles at both ends, and a busbar clamp is provided between the two stiles, with the main body of the busbar confined within the busbar clamp.

[0011] Furthermore, there are at least three busbar clamps.

[0012] The beneficial effects of this utility model are as follows: This application has a simple structure and is easy to install. It can meet the sealing requirements of the gas-insulated switchgear and the need to connect subsequent busbars without changing the cabinet structure, thus ensuring the reliability of the product operation. By eliminating the inner cone insulator or outer cone sleeve of the gas-insulated switchgear chamber, the cabinet structure components are modified with little or no alteration. The busbar plug can be directly inserted into the gas-insulated switchgear chamber, reducing unnecessary fault points caused by the inner cone insulator or outer cone sleeve, facilitating the connection of subsequent insulated busbars, improving project uniformity, and providing convenience for subsequent power station renovations. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the sealing flange of this utility model;

[0015] Figure 3 Assembly of this utility model Figure 1 ;

[0016] Figure 4 Assembly of this utility model Figure 2 ;

[0017] In the diagram: 100, busbar body; 110, connecting contact; 120, bus terminal block.

[0018] 200. Sealing flange; 210. Sealing ring groove; 220. Fixing threaded hole.

[0019] 300. Busbar support; 310. Stem; 320. Busbar clamp.

[0020] 400. Gas cabinet. Detailed Implementation

[0021] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0022] like Figure 1-4 As shown, one embodiment of this utility model discloses a busbar direct-connect plug structure, including a busbar body 100, a sealing flange 200, and a busbar support 300; one end of the busbar body 100 is provided with a connecting contact 110, and the other end is provided with a female terminal block 120; the sealing flange 200 is disposed on the busbar body 100 near the connecting contact 110, and the sealing flange 200 is operatively associated with the gas filling cabinet 400; the busbar support 300 is disposed on the busbar body 100 near the female terminal block 120; the busbar support 300 is used to fix the busbar.

[0023] In one embodiment, the busbar body 100 has at least three sections.

[0024] In one embodiment, a sealing ring groove 210 is provided at the position where the sealing flange 200 contacts the gas cabinet 400, and a sealing ring is provided in the sealing ring groove 210.

[0025] In one embodiment, the sealing flange 200 is provided with multiple sets of fixing threaded holes 220, which are symmetrically arranged around the axis of the sealing flange 200 and are engaged with the fixing threaded holes 220 by screws.

[0026] In one embodiment, the connecting contact 110 is inserted into the gas chamber 400 and connected to the conductor inside the gas chamber 400.

[0027] In one embodiment, the female terminal block 120 is disposed outside the gas-filled cabinet 400 and connected to the subsequent busbar.

[0028] In one embodiment, the busbar support 300 is provided with mullions 310 at both ends, and a busbar clamp 320 is provided between the two mullions 310, and the busbar body 100 is restricted within the busbar clamp 320; the busbar support 300 is used to support the busbar body 100.

[0029] Furthermore, there are at least three busbar clamps 320.

[0030] It should be noted that the gas-insulated switchgear 400 typically uses an inner cone insulator or an outer cone bushing to seal the gas chamber and transfer the subsequent insulated busbar. However, some users worry that the addition of too many accessories will increase the number of fault points. Furthermore, it is difficult to achieve project uniformity with too many types of inner cone insulators and outer cone bushings, and the connectors led out from the cabinet are not very universal. Therefore, a customized busbar plug is needed to directly insert into the gas-insulated switchgear 400 to replace the original connection method.

[0031] The existing gas-insulated switchgear 400 uses an inner cone insulator and outer cone bushing, which may cause cracking of the resin insulator and bushing due to external stress during subsequent installation. This can lead to gas leakage in the gas chamber of the switchgear 400, insufficient safety distance between live parts in the chamber, and discharge breakdown. Furthermore, the large number of product specifications limits the current specifications of the gas-insulated switchgear 400 and its busbars. In addition, project uniformity is difficult to guarantee, and the large number of product models causes significant problems for customers during the renovation of old substations. The purpose of this invention is to eliminate the inner cone insulator or outer cone bushing in the gas chamber of the gas-insulated switchgear 400, without altering or with minimal modification to the cabinet structure. The busbar plug can be directly inserted into the gas chamber of the gas-insulated switchgear 400, reducing unnecessary fault points caused by the inner cone insulator or outer cone bushing, facilitating subsequent insulated busbar connections, improving project uniformity, and providing convenience for future substation renovations.

[0032] The aforementioned direct-connection busbar plug structure allows the busbar plug to be directly inserted into the gas chamber of the gas-filled switchgear 400, eliminating the need for the inner cone insulator or outer cone sleeve used for the gas chamber transition. Busbar contacts connect to the copper busbar or conductive rod of the gas-filled switchgear 400, and a sealing flange 200 secures the busbar plug and seals the gas chamber. A standard conduit terminal block 120 is pre-installed externally for easy subsequent busbar connections. The key point is the elimination of the inner cone insulator or outer cone sleeve used for the gas chamber transition; the busbar plug connects directly to the chamber conductor. This reduces potential failure points and enhances equipment versatility. This application eliminates the inner cone insulator or outer cone sleeve used for the gas chamber transition, reducing potential failure points. The busbar plug connects directly to the chamber conductor, and standard copper busbars and conductive rods can be used within the chamber, ensuring project uniformity. The outgoing terminals are standard terminals, offering high versatility and facilitating user modifications.

[0033] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature. It should be noted that when an element is referred to as "fixed to" or "set on" another element, it can be directly on the other element or there may be an intermediate element present. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element present. The terms "vertical," "horizontal," "above," "below," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible embodiments.

Claims

1. A busbar direct plug-in structure, characterized by: The utility model relates to a busbar structure of a gas-filled cabinet The busbar body is provided with a connecting contact at one end and a female terminal row at the other end; A sealing flange is arranged on the busbar body near the connecting contact, and the sealing flange is operatively associated with the gas-filled cabinet; A busbar support is arranged on the busbar body near the female terminal row; the busbar support is used for fixing the busbar.

2. The bus direct plug structure of claim 1, wherein: The busbar body is at least three.

3. The bus direct plug structure of claim 1, wherein: A sealing ring groove is arranged at the position where the sealing flange contacts the gas-filled cabinet, and the sealing ring groove is provided with a sealing rubber ring.

4. The bus direct plug structure of claim 1, wherein: The sealing flange is provided with a plurality of fixed screw holes, and the fixed screw holes are symmetrically arranged about the axis of the sealing flange and cooperated with screws.

5. The bus direct plug structure of claim 1, wherein: The connecting contact is inserted into the gas-filled cabinet and connected with the conductor in the gas-filled cabinet.

6. The bus direct plug structure of claim 1, wherein: The female terminal row is arranged outside the gas-filled cabinet and connected with the subsequent busbar.

7. The bus direct plug structure of claim 1, wherein: The busbar support is provided with two vertical posts at both ends, a busbar clamp is arranged between the two vertical posts, and the busbar body is limited in the busbar clamp.

8. The bus direct plug structure of claim 7, wherein: The busbar clamp is at least three.

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